Quintin macnider



(No Model) MAONID'ERF STEP LADDER.

Patented Dee. 28, 18 86.

INVENTOR:

ATTORNEYS.

N FLTERS. Phokrljflwgrlphtr, Washinpon. D.C.

WITNESSES UNITED STATES PA ENT arion.

STEP-LADDER.

SPECIFICATION forming part of Letters Patent No. 355,095, dated December28, 1886.

Application filed September 13, 1886. Serial No. 213,432. (No model.)

To aZZ whom it may concern: I

Be it known that I, QUINTIN lVIAONIDER, of Belleville, in the Provinceof Ontario and Dominion of Canada, have invented a new and ImprovedStep-Ladder, .of which the following is a specification, reference beingbad to the annexed drawings, forming a part thereof, in which Figure lis a side elevation of my improved IO step-ladder, showing it in dottedlines in position for use, and Fig. 2 is a front elevation of the same.

Similar letters of reference indicate corresponding parts in both views.

The object of my invention is to construct a step-ladder which may beinclined at different angles, and which will maintain the steps in ahorizontal position.

My invention consists of a step-ladder composed of two pairs of sidebars pivoted to the ends of the steps and to the top step or platform,and provided with legs having curved upper ends and pivoted to the frontside bars and passing through staples on the rear side bars, all ashereinafter fully described, and pointed out in the claims.

Two pairs of side bars, A A, are pivoted to the ends of thesteps B andto the under surface of the platform 0. The side bars A, are pivoted tothe ends of the steps, near their front edges, and the bars A to theends of the steps, near their rear edges. This construction allows allthe ste s B to re maip parallel with each other anc witli'tiie'floor,while the 5 bars A A are inclined at any required angle. To the bars A,near their upper ends, are pivoted the curved upper ends of the legs DD, the ends being. curved. on a semicircle whose radius is equal toabout half the dis- 0 tance between the center of the front bar, A,

and the rear of the bar A. The curved ends of the legs D D pass throughstaples E E in serted in the side bars A, near their upper ends, and thecurved part of thelegs D is provided with serrations a, which engage thestaple E and hold the legs and bars A A in any position in which theymay be adjusted. The legs D D are also provided with a stop-pin, b,which limits their rearward motion. As the legs D D are swung on theirpivots to arrange the ladder for use, the side bars, A A, will swingover and the steps will maintain their horizontal position, as'indicatedin dotted lines in Fig. 1. Y

The platform 0 is preferably inclosed by side pieces, a, forming aconvenient receptacle for brushes, &c.

Having thus fully described my invention, 1

claim as new and desire to secure by Letters Patent- -1. In astep-1adder, the combination of the steps B, the side bars, A A, pivotedto the 'endsof the steps, near the front and rear edges, the legs D,provided with curved upper ends pivoted to the front side bars, A, andthe staples E, attached to the rear bar, A, and receiving thecurved endsof the legs, substantially as described.

2. The combination of the steps B, the side bars, A A, pivoted to thesteps, near their front and rear edges, thelegs D,having curved andserrated ends, and the staples E, attached to the rear bars, A, andadapted to engage the serrations of the legs D, substantially asdescribed.

Q. MAONIDEB.

Witnesses:

GEO. A. \VEMP, J AMES BROWN.

